In addition to the core content on this site, we maintain a library of quality external resources and implementation guides. If you have additional resource links to suggest, we welcome those contributions. See the contributing page for more information.
Good overview from Digital Ocean on making PHP apps (like WordPress) scale horizontally using open-source tools.
A nice presentation from Devana Technologies with an overview of how to build WordPress for Scale on AWS.
How Pantheon's Container-Based Elastic Hosting Scales WordPress
Know the challenges and risks going into any performance optimization.
Specific setup instructions for using Nginx as a reverse-proxy in front of WordPress
Step by step instructions to setting up Varnish in front of WordPress, from the makers of Varnish.
Zack Tollman's overview on caching concepts is a must-read for making smart decisions.
Excellent primer on working with wp_options, as well as transients.
Official documentation on the WordPress Object Cache
WordPress plugin to back your WP Object Cache with Redis
Practical advice on finding and fixing slow SQL queries in WordPress.
Documentation on how to scale out read queries using MySQL replication and HyperDB
Your DB can log slow queries for aggregate analysis. Find out how Percona's free tools can help you measure query performance at scale.
Another excellent example from Digital Ocean on how to automate clusters.
Example CloudFormation template to set up a WordPress stack on Amazon
Chef is one of the best systems-automation tools around. This walkthrough shows how to use it for a WordPress LAMP stack.
This piece from Rancher explains how Containers, the next architectural advance beyond Virtual Machines, can be used to power large scale WordPress Implementations.
How Pantheon's Container-Based Elastic Hosting Scales WordPress
Performant code is critical. Learn from 10up's Best Practices.
A good overview of development workflows using Git by Josh Pollock at wpmudev
Roots has a great set of playbooks for automating development and deployment using Ansible.
Learn how Apache Solr differs from MySQL and how to use it with WordPress
A working example of a WP_Query replacement to use an alternate search backend from Alley Interactive
Inside info from WordPress VIP on how they scale massive quantities of queries.
Have something to add to this page? File an issue on GitHub and we can consider adding it to the library.